That’s not how forgiveness works

Bearing with one another and, if one has a complaint against another, forgiving each other; as the Lord has forgiven you, so you also must forgive. Colossians 3:13 ESV)

 Something that holds many people back from forgiving others is that the persons involved have not sought forgiveness, or perhaps don’t feel that they need it, or don’t realize how badly they’ve hurt you. You can tend to feel that they don’t deserve your forgiveness, which of course keeps you from giving it.
 However, that’s not how forgiveness works. Forgiveness is for you, too. Forgiving the other person helps you.
 Forgiveness is the biggest step you can make in leaving the past behind. If you don’t forgive someone, then you can become stuck in the past and held back, and you can’t move forward. You are the one suffering, and you are the one feeling angry, bitter, and resentful, all of which can become a form of hatred. These feelings can eat you up and make you miserable, and in some cases even alter your personality and the way you relate to others. Holding on to anger, bitterness, and resentment ultimately hurts you.
 Forgiveness allows you to let go of these negative emotions that are holding you back so you can move on. There is often not a whole lot that can be done about the past and past hurts to make them right, but if you forgive others, you will receive healing that will enable you to move forward and leave the past behind. —Jesus [1]

 Forgiveness is the giving, and so the receiving, of life. —George MacDonald

[1] Anchor Life-changing Forgiveness